JPH0225277Y2 - - Google Patents
Info
- Publication number
- JPH0225277Y2 JPH0225277Y2 JP1985031244U JP3124485U JPH0225277Y2 JP H0225277 Y2 JPH0225277 Y2 JP H0225277Y2 JP 1985031244 U JP1985031244 U JP 1985031244U JP 3124485 U JP3124485 U JP 3124485U JP H0225277 Y2 JPH0225277 Y2 JP H0225277Y2
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- layer
- wave absorber
- laminate
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000006096 absorbing agent Substances 0.000 claims description 22
- 239000004744 fabric Substances 0.000 claims description 18
- 239000004020 conductor Substances 0.000 claims description 15
- 238000010276 construction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 239000002952 polymeric resin Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 229920005570 flexible polymer Polymers 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000007747 plating Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013305 flexible fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本案は２層型電波吸収体の改良に関する。[Detailed explanation of the idea] [Industrial application field] This proposal relates to improvement of a two-layer radio wave absorber.
低入力インピーダンス層とインピーダンス変成
層との積層体を導体面上に施工することにより構
成する２層型電波吸収体は既に実用化されてお
り、従来の1/4波長共振器型の電波吸収体に比べ
電波吸収体として動作する周波数帯域が広いこ
と、母材に高分子樹脂を使用するため耐候性に優
れること、母材の可撓性を利用して曲面部分に施
工することも可能であることなどの特徴を備えて
いる。
A two-layer radio wave absorber constructed by constructing a laminate of a low input impedance layer and an impedance change layer on a conductor surface has already been put into practical use, and it is different from the conventional 1/4 wavelength resonator type radio wave absorber. It operates over a wider frequency range as a radio wave absorber, has excellent weather resistance because it uses a polymer resin as the base material, and can be applied to curved surfaces by taking advantage of the flexibility of the base material. It has the following characteristics.
ところで、２層型電波吸収体は原理上電波到来
面の反対側の面は導体であることが必要であるた
め、施工面が導体でないときには積層体の一面、
すなわち低入力インピーダンス層の表面に予じめ
導体処理（メタルバツク）を施こしておかなけれ
ばならない。従来メタルバツク材として金属板、
具体的には、専ら軽量化を意図して0.5mm厚程度
のアルミニウム板が主として用いられていた。し
たがつて、この金属板が積層体の裏打材となつて
積層体が本来有する可撓性が著るしく損なわれ、
曲面又は折曲部分への施工が妨げられるという欠
点があつた。また、金属導体板には通常の場合平
滑板が用いられるため、施工面が粗面又は部分的
に凹凸を有するようなときにはその施工面に十分
なじませることができないという問題があつた。
By the way, in principle, in a two-layer radio wave absorber, the surface opposite to the radio wave arrival surface must be a conductor, so if the construction surface is not a conductor, one surface of the laminate,
That is, the surface of the low input impedance layer must be subjected to conductor treatment (metal backing) in advance. Conventionally, metal plates were used as metal back materials,
Specifically, aluminum plates with a thickness of about 0.5 mm have been mainly used with the sole intention of reducing weight. Therefore, this metal plate serves as a backing material for the laminate, and the inherent flexibility of the laminate is significantly impaired.
The disadvantage was that construction on curved surfaces or bent parts was hindered. Furthermore, since a smooth metal conductor plate is normally used, there is a problem in that when the surface to be applied is rough or partially uneven, it cannot be sufficiently blended into the surface to be applied.
本案の目的は導体処理により積層体の有する可
撓性を損なわず、しかも施工面への接着性に優れ
た２層型電波吸収体を提供することにある。 The purpose of the present invention is to provide a two-layer radio wave absorber that does not impair the flexibility of the laminate due to conductor treatment and has excellent adhesiveness to the construction surface.
本案はいずれも可撓性高分子樹脂を母材とする
低入力インピーダンス層とインピーダンス変成層
との積層体を導体面上に施工することにより構成
する電波吸収体において、予じめ該積層体の低入
力インピーダンス層の裏面に、導体処理が施され
た柔軟な繊維組織からなり、施工面の凹凸になじ
ませて貼着する繊維質基布を有することを特徴と
する電波吸収体である。
This proposal is a radio wave absorber constructed by constructing a laminate of a low input impedance layer and an impedance modification layer, both of which have flexible polymer resin as a base material, on a conductor surface. This radio wave absorber is characterized by having a fibrous base cloth on the back surface of the low input impedance layer, which is made of a flexible fiber structure that has been subjected to conductor treatment, and which can be adhered to the surface by adapting it to the unevenness of the construction surface.
第１図において、１はインピーダンス変成層、
２は低入力インピーダンス層である。いずれもそ
の母材は高分子樹脂を主体としてシート状に成型
加工されて可撓性、屈撓性を有しており、インピ
ーダンス変成層１を上層に、低入力インピーダン
ス層２を下層として積層されている。本案はこの
低入力インピーダンス層２側の面にさらに導体処
理を施こした繊維質基布３を貼着したものであ
る。繊維質基布３は天然繊維糸、合成繊維糸を用
いた織布、編布又は不織布である。繊維質基布３
は前記積層体を保持させるための基材としての強
度とともに柔軟性を有することが必要である。厚
味は特に問題ではないが、組織に緩衝性を有する
ことは施工面の表面形状になじませることができ
る点で有利である。特に編、織布を用いるときに
はその編目、織目を利用して施工面の形状に有効
になじませることができ、また接着剤を編目、織
目に受け入れて施工面に対する接着強度を高める
ことができる。 In Figure 1, 1 is an impedance transformation layer,
2 is a low input impedance layer. In both cases, the base material is mainly made of polymer resin and is molded into a sheet shape to have flexibility and flexibility, and is laminated with the impedance change layer 1 as the upper layer and the low input impedance layer 2 as the lower layer. ing. In the present invention, a fibrous base fabric 3 further subjected to conductor treatment is attached to the surface on the low input impedance layer 2 side. The fibrous base fabric 3 is a woven fabric, a knitted fabric, or a nonwoven fabric using natural fiber threads or synthetic fiber threads. Fibrous base fabric 3
needs to have strength and flexibility as a base material for holding the laminate. Thickness is not a particular problem, but having cushioning properties in the structure is advantageous in that it can be adapted to the surface shape of the construction surface. In particular, when knitted or woven fabrics are used, the stitches and textures can be used to effectively conform to the shape of the construction surface, and the adhesive can be absorbed into the stitches and textures to increase the adhesive strength to the construction surface. can.
繊維質基布３に施こす導体処理としてはメツキ
によるほか、導電性繊維を繊維組織中に混入して
もよい。メツキ処理によるときには積層体を貼着
する一面に対して行う。メツキ処理によつて基布
３の一面には導電膜４を形成することが望ましい
が、必ずしも膜状である必要はない。 As the conductor treatment applied to the fibrous base fabric 3, in addition to plating, conductive fibers may be mixed into the fibrous structure. When plating is used, it is performed on one side to which the laminate is to be attached. Although it is desirable to form the conductive film 4 on one surface of the base fabric 3 by plating, it does not necessarily have to be in the form of a film.
なお、メツキに代えて導電箔と基布とのラミネ
ート布を用いることもできる。 Note that a laminated cloth of conductive foil and base cloth may be used instead of plating.
本案によれば、２層型電波吸収体の導体面に導
体処理を施こした柔軟な繊維質基布を用いるた
め、電波吸収体を構成する積層体が本来保有して
いる可撓性が何等損われず、したがつて積層体を
自由に折曲、変形させることにより建物、設備の
曲面、コーナ部などに容易に施工することができ
る。また、施工面に凹凸などが形成されていると
きでもその形状になじませて無理なく接着施工を
行うことができ、あわせて接着剤を繊維組織内で
固化させることにより強固な接着を行うことがで
きる。逆に繊維糸と接着剤との選定によつて徹去
の際のピールアツプ性を高めることもできる。
According to this proposal, since a flexible fibrous base fabric treated with a conductor is used on the conductor surface of the two-layered radio wave absorber, the inherent flexibility of the laminate that constitutes the radio wave absorber is reduced. The laminate is not damaged, so it can be easily applied to curved surfaces, corners, etc. of buildings and equipment by freely bending and deforming the laminate. In addition, even when there are irregularities formed on the construction surface, the adhesive can be applied easily by adapting to the shape, and the adhesive can be solidified within the fiber structure to provide strong adhesion. can. Conversely, peel-up properties during removal can be improved by selecting the fiber threads and adhesive.
以下に本案の実施例を示す。 Examples of this proposal are shown below.
本実施例に用いた２層型電波吸収体の低入力イ
ンピーダンス層は、クロロプレンゴムにフエライ
ト（Fe3O4）を70wt％、長さ３mm、太さ60μφの
黄銅金属短繊維を2.5wt％混入したもので厚み1.3
mmである。インピーダンス変成層はクロロプレン
ゴムにフエライト（Fe3O4）を20wt％混入したも
ので厚み3.4mmである。この２層型電波吸収体は、
８〜13GHzの周波数帯で動作するように設計し
たもので、金属体上に設置したときの電波吸収特
性は、第２図に示すように−20dBの吸収量をも
つが、非属体である塩化ビニール板に設置した場
合は第３図に示すように吸収量は−10dB以下に
劣化する。本実施例においては２層型電波吸収体
に以下のメタルバツク処理を施した。メタルバツ
ク材として用いた繊維織物は、ポリエステル布の
表面にニツケルをメツキしたものである。クロス
の織組織の密度はタテ70×ヨコ50本／インチ、ニ
ツケル付着量は40wt％とした。クロスの織組織
の間隔と、表面の凹凸はGHz帯の電磁波の波長
に対して充分に小さくその反射特性は金属体と同
じ性質となる。このニツケルメツキポリエステル
布を前記２層型電波吸収体の低入力インピーダン
ス層に取り付け、これを塩化ビニール板に設置し
たときの電波吸収特性は、第４図に示すように−
20dBとなり、２層型電波吸収体単体を金属体に
設置した場合と同等になることがわかる。またこ
のニツケルメツキポリエステル布は柔軟性に富ん
でおり、２層型電波吸収体に取り付けても、吸収
体の可撓性をほとんど損わず、設置面が曲面であ
つても施工は容易である。 The low input impedance layer of the two-layer radio wave absorber used in this example is made of chloroprene rubber mixed with 70 wt% of ferrite (Fe 3 O 4 ) and 2.5 wt% of short brass metal fibers with a length of 3 mm and a thickness of 60 μφ. The thickness is 1.3
mm. The impedance modified layer is made of chloroprene rubber mixed with 20wt% of ferrite (Fe 3 O 4 ) and has a thickness of 3.4mm. This two-layer radio wave absorber is
It is designed to operate in the frequency band of 8 to 13 GHz, and its radio wave absorption characteristics when installed on a metal body have an absorption amount of -20 dB as shown in Figure 2, but it is a non-metallic body. When installed on a vinyl chloride board, the amount of absorption deteriorates to -10 dB or less, as shown in Figure 3. In this example, the following metal back treatment was applied to the two-layer radio wave absorber. The fiber fabric used as the metal bag material is a polyester fabric plated with nickel. The density of the cloth weave was 70 vertically x 50 horizontally per inch, and the amount of nickel deposited was 40 wt%. The spacing between the woven structures of the cloth and the irregularities on the surface are sufficiently small for the wavelength of electromagnetic waves in the GHz band, and its reflection characteristics are the same as those of a metal body. When this Nickelmetsuki polyester cloth is attached to the low input impedance layer of the two-layer radio wave absorber and this is installed on a vinyl chloride board, the radio wave absorption characteristics are as shown in Figure 4.
It can be seen that this is 20 dB, which is equivalent to installing a single two-layer radio wave absorber on a metal body. In addition, this Nickel Metsuki polyester cloth is highly flexible, so even when attached to a two-layer radio wave absorber, the flexibility of the absorber is hardly impaired, and installation is easy even if the installation surface is a curved surface. .
第１図は本案の実施例を示す一部断面斜視図、
第２図は金属体に２層型電波吸収体を設置したと
きの電波吸収特性を示す図、第３図は非金属体に
２層型電波吸収体を設置したときの電波吸収特性
を示す図、第４図は本案電波吸収体を非金属体に
設置したときの電波吸収特性を示す図である。
１……インピーダンス変成層、２……低入力イ
ンピーダンス層、３……導体処理を施こした繊維
質基布、４……導体膜。
FIG. 1 is a partially sectional perspective view showing an embodiment of the present invention;
Figure 2 shows the radio wave absorption characteristics when a two-layer radio wave absorber is installed on a metal body, and Figure 3 shows the radio wave absorption characteristics when a two-layer radio wave absorber is installed on a non-metallic body. , FIG. 4 is a diagram showing the radio wave absorption characteristics when the radio wave absorber of the present invention is installed on a non-metallic body. 1... impedance modification layer, 2... low input impedance layer, 3... fibrous base fabric subjected to conductor treatment, 4... conductor film.
Claims (1)
インピーダンス層とインピーダンス変成層との積
層体を誘電面上に施工することにより構成する電
波吸収体において、予じめ該積層体の低入力イン
ピーダンス層の裏面に、導体処理が施された柔軟
な繊維組織からなり、施工面の凹凸になじませて
貼着する繊維質基布を有することを特徴とする電
波吸収体。 In a radio wave absorber constructed by constructing a laminate of a low input impedance layer and an impedance change layer, each of which has a flexible polymer resin as a base material, on a dielectric surface, A radio wave absorber characterized by having a fibrous base cloth on the back side of an impedance layer, which is made of a flexible fibrous structure that has been subjected to a conductor treatment, and is adhered to the surface so as to conform to the unevenness of the construction surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985031244U JPH0225277Y2 (en) | 1985-03-05 | 1985-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985031244U JPH0225277Y2 (en) | 1985-03-05 | 1985-03-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61149398U JPS61149398U (en) | 1986-09-16 |
| JPH0225277Y2 true JPH0225277Y2 (en) | 1990-07-11 |
Family
ID=30531674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985031244U Expired JPH0225277Y2 (en) | 1985-03-05 | 1985-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0225277Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504423A (en) * | 1973-05-18 | 1975-01-17 |
-
1985
- 1985-03-05 JP JP1985031244U patent/JPH0225277Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504423A (en) * | 1973-05-18 | 1975-01-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61149398U (en) | 1986-09-16 |
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